The TLV CT20D is a compact multi-purpose electro-pneumatic control valve equipped with an I/P positioner, designed for steam and non-hazardous fluids. It integrates a digital I/P positioner and a pneumatic actuator of standardized sizes into a compact configuration, making it an excellent choice for a variety of demanding industrial applications.

The valve utilizes a rolling actuator diaphragm that ensures linearity over the operating stroke and maximizes service life. The self-adjusting positioner features zero calibration by auto-tuning, which ensures tight shut-off and improves control during low flow conditions. Its positioner LCD allows simple operation with capacitive keys and easily displays valve travel and error codes.

Features

• Digital I/P positioner and pneumatic actuator in a compact configuration.
• Rolling actuator diaphragm ensures linearity over the operating stroke and maximizes life.
• Self-adjusting positioner with zero calibration by auto-tuning ensures tight shut-off and improves low-flow control.
• Positioner LCD allows simple operation with capacitive keys and displays valve travel and error codes.
• Self-adjusting chevron packing minimizes seal leaks, stem wear and stiction/hysteresis problems.
• Sizes DN 40 and above utilize V-port plugs to improve control stability and provide durability resulting in a long service life.

Specifications

Model	CT20D
Body Material	Ductile Cast Iron (EN 5.3103), Cast Stainless Steel (A351 Gr.CF8M)
Connection	Flanged PN25 DIN EN 1092-2, Flanged PN40 DIN EN 1092-2
Size (DN)	15 to 150
Max. Oper. Temperature (°C) TMO	220
Leak Rate Class	Class IV / Metal to Metal Seating (Standard)

WARNING

Do not use with toxic, flammable or otherwise hazardous fluids. Install properly and DO NOT use this product outside the recommended operating pressure, temperature and other specification ranges. Improper use may result in such hazards as damage to the product or malfunctions that may lead to serious accidents.

Actuator / Positioner

Item	Specification
Fail-safe Position	Valve CLOSED (Air to Open)
Motive Medium	Oil-free air, filtered to 5 μm
Electrical Input Signal (mA)	4 to 20
Air Supply Pressure Range for Positioner (barg)	4.4 to 6
Ambient Temperature Range (°C)	-20 to +80
Protection Class	IP 66
Intrinsically Safe Rating (optional)	ATEX II 2G Ex ia IIC T4

Configuration

No.	Description	Material
1	Valve Body	Ductile Cast Iron / Cast Stainless Steel
2	Valve Seat	Stainless Steel X12Cr13 / AISI410
3	Plug and Stem	Stainless Steel X2CrNiMo17-12-2/X12Cr13
4	Valve Bonnet Gasket	Graphite
6	Stuffing Box V-ring Packing	Fluorine Resin PTFE with Carbon
9	Rolling Diaphragm	Nitrile Rubber with Fabric Insert

Dimensions

Installation Notes

Installation Angle

Install the product vertically, so that the arrow mark on the body points horizontally in the direction of flow. Allowable inclination is 10 degrees in the fore-aft direction and 15 degrees in the plane perpendicular to the flow line. A drain plug is installed on the CT20D.

Piping Support

Install the product, paying attention to avoid excessive load, bending and vibration. Support the inlet and outlet pipes securely.

Maintenance Space

Leave sufficient space for maintenance, inspection and repair.

TIP

Blowdown is especially important for newly installed piping or after the system has been shut down for a long period of time. This will reduce operation failure caused by condensate or foreign matter.